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Re^2: Decoding .z and .gz files

by blackadder (Hermit)
on Mar 26, 2007 at 12:15 UTC ( [id://606565] : note . print w/replies, xml ) Need Help??


in reply to Re: Decoding .z and .gz files
in thread Decoding .z and .gz files

Hi

its a small "z" not a Capital "Z"

Still I Tried Compress::LZF as suggested however I got this error
C:\Perl>perl z.pl -I c:/perl/bin compressed data corrupted (size mismatch) at z.pl line 9, <$fh> chunk +1.
Thanks
Blackadder

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Re^3: Decoding .z and .gz files
by jettero (Monsignor) on Mar 26, 2007 at 12:34 UTC

    Nevertheless, I suspect it's supposed to be a capital Z. I don't suppose you could paste in a hex dump of the first 256 characters or so... It may reveal that the compression isn't ".z" or ".Z" at all.

    UPDATE: Wow, just wow. A hex dump would look more like this:

    0000000: 4120 6865 7820 6475 6d70 2077 6f75 6c64 A hex dump would 0000010: 206c 6f6f 6b20 6d6f 7265 206c 696b 6520 look more like 0000020: 7468 6973 3a0a this:.

    Of course, your tools may differ from xxd.

    -Paul

      Hi Paul

      How do you mean " hex dump of the first 256 characters"! Where from? do you mean the output from running the Copmress::LZF based script? Well this returned
      compressed data corrupted (size mismatch) at z.pl line 5.
      And the output from running Archice::Zip or Compress::Zlib returned an output similar to what you get if you open a bin file using a text editer (lots of goobldi gook on the screen including lots beeps)! do you still want me to post this output? aNYWAY HERE IS THE OUTPUT
      CH3viƍ9bҰ(K0bSy2ɓ(S\ɲ˂6h P ͚0n +F 6jhy3 4ntɴӧP3N97yCG*S\$CF g]˶۷pI`… FŌ;~,f9aĸF .w3w3  7ex6gװRu Xqo.X,N N| 4∔ B@$!R $F + rN<҄{ @ oO<F C\Mc&0su!Frނ 2 1m pNQ 6 NXat a `n!`eQFBn %VEPx`2:B A1$ED Ar116.T#d et 8 cParI9FM6B 9D +HS7đfqFr4tFr `dp$ Ul oAW q&6Ѣnq3pE <چ=FCn B aFx1ƴqԑF-vaG,1Ʃb,fY9a-v +% YFfl MAF+e¡^H‹炀y[nP)©** +ƴj-*x |ô hG:jK)F:)bGLqy (fht- +/A~sp n\ b_U/=^ p]5um6f =xw#6.xW?>vy'N  \ +dP虏^z:›܄.ˡ:alf npu"i?;›1F/ +ϼwF[o;.aͷX~-L_q'ЯpC=|C5 +m{ܐ10p| /pjW v04>IO%< U? p^vػ@| ':<‹#A?CAB/_p0@ZDj=hDە5iE +~Qr|4J_8U>6@n|AR)0Fry a,IBbRmp o(c$3D4|AJ_(8IH7oԀ'^!VhE +6xyˬc:h:2T$氮4|hP)N` f8`Tj _ LtMX@m +sth;uy*6_XTB$"AG \ӆn ?HT/Vr- = ?>S:TDAiMQp:xcݫm2)Ҍ +PHwh**%#@ NBjZvpjM/duy`mUSa gٴ V4Y6f5[^%x`[®ծRՑ9Wöu$Ctؿufrô +~U,[Py-k6(,d=mWɰK l`i!RHvւ@*b*r* +ɶ%ڂ5 W[7L7Y[ukZ&]-h*6W Cb[knG}ux p Ha Sp{Z S[ UIÆ+P1, mH_\gROUP[1l,v.hVHR& nK6+| esP<Z9P+sR醊m<×/q _09s>՟|6R-*4-7od$ЇE9Th6DZ^CiF3; +)M]Zv4;PU>mYԬkӫ5]Ԝ  ;֦ leW{]nStPT0˽^.tZ 8S۩:21L@3d֯8‹x3 +g6ZXUHR4&5Pa-v71*,7I+]ubX]\M2(&"nh#(k +BpNHI[C 6ХNqK1aJVO&>w 0$2a.ͶE:P($"B"<qyFhbVoaU1S@`3l#  +24{jšvYaA47St@R'\ٞLbtǞ 炴i)RGXTVk Ye >.:2›Uhf>v%F ‹o|޿?,7Ґ $Lqf5V4 +w)yg}Bw6~CD_' y8xRr~u2#sxxw33'y +0_wX5Sz!V 2 D||24MfNRaaEy1R9dLSxO2\Y +[u]hYEX)ח\zK͇S:}-T[,ice3^aCwk0-,|R$=v3y +삈-҇ӈ XvVP5{XO8YxPzO~h@"1 .h H"(‹x@‹_ch x6Rh"l"ƈ_FW&(F)‹xe +s‹ ‹8=V‹djc_hGsPc4p8dϥ0 +8 Iu-Y‹ y‹B1" &x]"Z&*Y5o-=Wx%xW1x y58y8XA'e)%2)#W p2 $ 1M54@y 'zix쒕5rHNKGHV T0%sfGg% 'Ƀ;E4EQ(ti낗zNt9u<ɑJd7sYwR7RH>s9s +DRh fw/rHiQ{RWtGe6››]›IB4ǜr&љ +›\G?bz%ٝiJRi_Fj&l)<2ϷSG[@%G2>%1 +]_xq‹=y1٠ؑԨC#W.#ԡ 4WlE(W 9
      Blackadder

        There's the little unix utility file, which you can ask to make an 'educated' guess, if you're unsure what format a particular file is. Running it on the binary data you posted (which I saved as the file 606574), it says :

        $ file 606574 606574: compress'd data 16 bits

        So, as Burak noted, you'd have to use an external program like gzip (or gunzip, etc.) which does handle "compress'd" (i.e. .Z) files. Trying to uncompress the file gives

        $ gzip -dc 606574 CC0000000000_gvap-infsbil002_1501071006/SunOS0000644000000000000000000 +0000000105507 gzip: 606574: corrupt input.

        which looks very much like the beginning of a tar file... (the 'corrupt input' is to be expected, and can be ignored here)